910 - The Earworm Reverberation
Aired December 10, 2015

Sheldon has a revelation when he realizes why a song was stuck in his head. Also, Amy invites Dave over for dinner despite their previously awkward date, and Wolowitz and Koothrappali become obsessed with a fan of their band, "Footprints on the Moon".

When Sheldon films a video for "Crazy Future Sheldon" complete with information about his life, Sheldon points out his spot and explains "You're very protective of it. When anyone else tries to sit here, you berate them relentlessly. It sounds mean, but somehow you make it adorable."

Sheldon performs his knock on Amy's apartment door when he rushes over there to try win her back. Despite his date with Amy being interrupted by her ex-boyfriend, Dave is more excited to finally meet the great Sheldon Cooper.

"Amy: That's Sheldon.

Dave: You're kidding. How's my hair?"

Episode Quotes

Penny: So you have a song stuck in your head. It happens to everybody.Sheldon: Well, I'm not everybody. I have an eidetic memory. I should be able to remember what song this is, but I can't. Something's wrong with me.Penny: I told you if we were patient, he'd figure it out for himself.

Sheldon: This song is never going to stop.Have you ever dealt with something so relentlessly irritating?Leonard: That's a trick question, right?

Sheldon: This is Leonard. He's your best friend in the world.Leonard: All right, just stop. This is ridiculous.Sheldon: Sometimes he gets cranky, but you can trust him with your life. And he does more things for you than I can even begin to list.Leonard: Thank you.

Sheldon: I remember the song! It's called "Darlin'" by the Beach Boys! Oh, thank goodness! I'm not crazy! I don't have to take a pigeon as my bride!Leonard: There goes our shot at him living on the roof.